Building-mold.



No. 864,767.l 4MWENTBD SEPT. 3, 1907. J. D. lBICKFORD. x

" BUILDING MOLD.

u N l@ No. 864,767. PATENTBD SEPT. 3,-19o7.

J; D. BIGKPORD.

BUILDING MOLD. APPLIOATION FILED APB. 9, 1907,

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wnuurmuwc No. 864,767. PATBNTBD SEPT ,3,1907.

7 J. D, BIUKFORD. L

BUILDING MOLD.

APPLIATION FILED APR. 9: 1907.

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wir" @aow UNITED STATES -Pie'lENT OFFICE.-

.OHN BIGKFORD, OF CLEVELAND, OHIO.

BUILDING-MOLD.

Specicationl or Letters Patent.

Patented Sept. 3, 1907.

Application rua April 9,1907. serian. 367,199.

To all whom 'it rnay roncem: u

Be it knownthat I, JOHN DQBIckFoRD, a citizen oi the United States,residing at Cleveland, in the county of Cuyahoga andState of Ohio, haveinvented certain structure, upon the acbrnpletion oione the forms and.

new and 'useful Improvements in Building-Molds, of

which the following Lisaj specification.

This invention relates to wall orbuilding-molds, and has 'for its objectto'provide an expansible separable, and adjustable `mold or vformsuitable for erecting con-V crete buildings .orzuseiulin concretebuilding construction,

,Inasmuch as different buildings usually vary in framework in which thewalls, columns, beams and girders -were molded. are usually 'of sma'llvalue, and must be rebuilt or changedin'various'ways to meet thedimensions of the nextstru'cture, either by sawing off` 'adjustable beamform. ,Fig. 4is asid'e elevation of a` the ends thereof for a differencelin height or length, or by taking them all apartffor ditferentlwidthsorthicknesses, anclfor the erection of a larger structure new timber isusually necessary, lbecause splicing of the'bld timber o'r forms willnot` withstandthe strength test. In consequenceuof these and variousother differences existing with respect toforms for concreteconstructions,

old sets of timbers or 'for-maare frequently rendered;`

valueless, which is expensive, for itqoften takes several thousanddollars to supply the timber -forms necessary for :building amodernbuilding.

The object of the present invention is to provide means whereby, themolds for the c'olumn's, beams; ooring, joists. etc. are adjustable tomeet the requirements and dimensions ofvarious' structures, formingapermanent of fonnsadaptedfto 4b e used repeatedly,

.thereby lessening the costaud ,savingA waste.

.Variousembodiments ofthe `invention are illustrated in the accompanyingdrawings in which,l l

Figurel is a side elevation. o f a form for acolumn.

'Fig. 2 is a perspective'view thereoLwithout the con-v necting bolts,parts'being broken away. to show other parts more clearly. '3 is avperspective view of van shore. Fig. 5 is a front elevation of thesame.f Fig. is a partial front elevation of a shore having a .modified topend adapted to receive the joists form or bearer.

Figs. "7 8 and 9'a're details showing akey'arrangement for holding theshores to beamsl and the like. Figs. 10 and 11 are side andtop planvviews oia joist'bearer. Fig. 12 is a side view illustrating a kneesupport for the vcolumn and beam forms. l

Thecolumn form is shown in Figs. l and 2, consisting of upper and lowersections or forms held together by ii middle form or casing'lZ, whichlatter acts as a sleeveto cover or inclose the joint. The 'varioussections are made of parallel strips' oxf staves indicated at 17fastened together by 4bolts'8,9 andll, as will appearin 1, which extendAsuitable'holesl .iny the respective l staves of each wall or side ofthe form, and so bind the staves of ea'ch Wall together as well as thewalls to each other. The'staves or strips 17 vary in width, say -rom ahalf inch up to several inches, and the adjustment is 4 effected byusing more or less of these staves, that is,

. the'adjustment with respect to`width, thickness or diameter'. Theouter casing or connecting part 12 it -over the adjacent ends of thesections 6 and l0, and is fastened thereto by means of bolts 8.

lsections 6 and 10, in other words, by drawing them more or less out ofthe connecting leasing 12,- before the bolts 8 are put in p1ace. Inorderto ll the space between vthe adjacent ends of the casings 6 and 10,-a

cated at25, which are fitted 'between said ends. These `short strips orsections are made of the same timber The vertical adjustment ef thecolumnform seffected by extending or retracting the upper and lowersupply, of short strips or, staves are provided, as indii with respectto width and thickness as the staves 17,

and consequently will`match the same in the various lateral adjustments'provided,l andy in order `to hold the short blocks 25 in place, theinner ends of .the

.staves 17 are undercut orbeveled, 'and the meetingv ends of the blocks25 are beveled, as indicated as 2 8, 80

So that when: said blocks 25 'are put in place they are held by thebevel and cannotcollapse or fall inwardly, andthey cannot fall outwardlybecause the connecting 'section 12 extends or is placed around the same,to

' form a substantial backing for the joints. A stock of 85 short blocksor sections 25'are provided, of different lengths, which can besubstituted according tothe work in hand'and'according to the height ofthe column.4 This construction vmakes it possible to use 'columns toreach any'height of ceiling, `and also to 90.

form columns of any size ordiameter, since the viorms more upper end ofthe form. ibut at the bottom a hinged door 1.5 is provided in one sideoi the form. `This Y door may be clampedand held' closed `by'bolts 19extending throughthe orrn, ori by removing the; bolts the doorcanbeopenedand thebottm of the steel column or reiniorc'emnt'jgot at andwired toiproper t1051 position, 'after whiclfthedoor closed whiletheconcrete is run f At' the top theupper section' 6 .may becut away orVout'on each sidetoreceive the\beamiformsleavin`g, v

corner post 20to hold, the beam forms in place. The ,dient-away parts atthe.top,of..i114sfrtoll.fol'l y v'i'ith acorner columnfform as shown inFigs. l1 and2, 110

other columns may be cutout according to the beams they are to support,and obviously the shorter or cut-away staves can be changed to any sidedesired.

In Fig. 3 a beam form is shown consisting of a hori zontal casing formedin two sections, composed of strips 17l1 bolted together by bolts 9'* ina manner similar to the column form above described. The beam form isopen at the top and at the ends, and between the end sections arespacing pieces 25, corresponding in number and section to the pieces 17,and undercut or beveled at the ends in the manner heretofore referredto. When the forms are assembled the beamior'ms rest in the recessesat'the top of the column form, and have side braces 2lc which projectagainst the sides of the column form and` steady the parts. The strips17 and the pieces 25a allow the size of the beam form to be adjustedwith respect to the width, thickness and length, in the manner similarto that already described with respect tothe column.

The joint between the sections ofthe beam form is re inforced andinclosed by a central casing 30 which is composed of strips in a mannersimilar to the middle casing 12 of the column forms, said strips beingheld I together by cross bolts ll extendingvertically and horizontally,and bolted to the beam sectionby bolts 8a. Cross bolts 29 extend throughthe sides and bottom of the form and support blocks 18l which carry ajoist or timber 22 held by movable clips 27E. These joists or timbersextend parallel to each other on opposite sides of the beam form and aresupported on the joist bearers to be hereinafter described. The joistsor beams 22 are for supporting the deck or temporaryfloor which whenlaid is flush with the top oi the beam form, and which in the buildingconstruction will be covered with thc concrete forming the floor andceiling between the beams.

The beam iorm shown in Fig. 3 has the advantage that its sides aredetachable by taking out the bolts, after the concrete has set, allowinga circulation oi air around the beam which will dry it-in less time thanit now takes.

The adjustable shores shown in Figs. 4 and 5 serves a props for the beamforms and the joist bearers, and consist of anupright 36 having a crosspiece 34 at the top .fastened on each side by blocks 54 secured by bolts40.

Said upright is supported at its lower end between parallel uprights 37connected at the top'by blocks 38 at each side, bolted thereto, andhaving. a block 4l between the uprights at the bottom. The upright 36will move up and down between the lower bars 37 so that a verticaladjustment can be had, and set by bolts 20c extending through any of theseries of holes lll in the uprights.

For the purpose of holding the upper bar or upright 36 on the beam formor joist when adjusting the shore,

two blocks 19h, as shown in Figs. 8 and 9, are secured to the crosspiece 34, and a Wedge key 12c is driven between the blocks and the beamorm at one side. 'I his binds the top of the shore to the beam form andallows the shore to be adjusted to proper height.

In'Fig. 6 a modilied form of shore is shown, having a top end providedwith upwardly-projecting strips 43 secured to the upright and providedat the top with a cross bolt 50 which may be used to connect the shoreto a joist bearer. V

Extensible and adjustable joist bearers are shown in Figs. 10 and 1l,consisting of horizontal lengthwise strips 53 connected by parallelstrips 58 and bolts 55, v

at .60, joined to the 'column and beam forms by vertical and horizontalbolts 6l, which extend through the forms All of. the parts .used inbuilding the forms will be provided 'withsuitable bolt holes to receivethe bolts heretofore referred to and to allow the various adjustments.`A set or stock of pieces or parts constructed in accordance with thisinvention will enable a builder to 4construct forms for various kindsand sizes of work,

which can be built up to proper size and used repeatedly and allowing anadjustment to accommodate work of different widths and thicknesses.

l claim:

1, A mold for cement or concrete construction. comprising sectionsplaced endwise with respect to each other and an outer casing inclosingthe adjacent ends of the sections, said sections and casing being formedof a plurality of staves extending lengthwise beside each other. thestaves of the sections and casini,r being of similar widths and capableof b eing removed or replaced to equally vary the size of said parts.

2, A mold of the kind described, consisting of sections placed endwiseand spaced witlrrespect to each other. an outer casing inclosing theadjacent ends of the sections. and filling pieces fitted between thesaid ends and within the casing.

A mold of the kind described. consisting of sections placed endwise andadjustable with respect to each other. a middle section inclosingr theadjacent ends of said. sections. and filling pieces fitting between saidends and within the middle section, the said sections being all built upof staves extending lengthwise side by side and separably fastenedtogether. whereby more or less of the stares may be used, to vary thecross-section of the molo.

4. A mold of the kind described, consisting of sections placed endwiseand spaced with respect' to each other. the `)adjacent ends beingundercut. filling pieces located between said sections and retainedunder said ends. and an outer casing surrounding,r said ends and thefilling pieces.

- In testimony whereof l aix my signature, in presence of two witnesses.

JOHN l). BICKFORD;

Witnesses .ToHN A. Bouiriunnr. SHIRLEY .l. Boxiimxnn'lz

